Calculations of Di-Hadron Production via Two-Photon Processes in Relativistic Heavy-Ion Collisions
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| Format: | Preprint |
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2025
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| _version_ | 1866911466300375040 |
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| author | Wang, Luobing Li, Xinbai Tang, Zebo Wu, Xin Zha, Wangmei |
| author_facet | Wang, Luobing Li, Xinbai Tang, Zebo Wu, Xin Zha, Wangmei |
| contents | Two-photon processes in relativistic heavy-ion collisions have emerged as a critical probe of quantum electrodynamics in ultra-intense electromagnetic fields, with recent focus extending beyond dileptons to hadronic final states. At present, quantitative studies of di-hadron production via two-photon interactions remain scarce. In this work, we employ the Equivalent Photon Approximation and the two-photon fusion measurements from \(e^{+}e^{-}\) collisions to obtain differential cross-section predictions for \(π^{+}π^{-}\), \(K^{+}K^{-}\), and \(p\bar{p}\) pairs produced in ultra-peripheral \(\mathrm{Au{+}Au}\) collisions at \(\sqrt{s_{NN}} = 200\,\text{GeV}\) within the STAR acceptance, as well as in \(\mathrm{Pb{+}Pb}\) collisions at \(\sqrt{s_{NN}} = 5.36\,\text{TeV}\) within typical LHC acceptance. The calculations deliver the unified baseline for light-meson and baryon pairs in this environment, supplying benchmarks for upcoming STAR and LHC measurements and guiding future systematic investigations of hadronic two-photon processes at RHIC and LHC facilities. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_00996 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Calculations of Di-Hadron Production via Two-Photon Processes in Relativistic Heavy-Ion Collisions Wang, Luobing Li, Xinbai Tang, Zebo Wu, Xin Zha, Wangmei High Energy Physics - Phenomenology Two-photon processes in relativistic heavy-ion collisions have emerged as a critical probe of quantum electrodynamics in ultra-intense electromagnetic fields, with recent focus extending beyond dileptons to hadronic final states. At present, quantitative studies of di-hadron production via two-photon interactions remain scarce. In this work, we employ the Equivalent Photon Approximation and the two-photon fusion measurements from \(e^{+}e^{-}\) collisions to obtain differential cross-section predictions for \(π^{+}π^{-}\), \(K^{+}K^{-}\), and \(p\bar{p}\) pairs produced in ultra-peripheral \(\mathrm{Au{+}Au}\) collisions at \(\sqrt{s_{NN}} = 200\,\text{GeV}\) within the STAR acceptance, as well as in \(\mathrm{Pb{+}Pb}\) collisions at \(\sqrt{s_{NN}} = 5.36\,\text{TeV}\) within typical LHC acceptance. The calculations deliver the unified baseline for light-meson and baryon pairs in this environment, supplying benchmarks for upcoming STAR and LHC measurements and guiding future systematic investigations of hadronic two-photon processes at RHIC and LHC facilities. |
| title | Calculations of Di-Hadron Production via Two-Photon Processes in Relativistic Heavy-Ion Collisions |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.00996 |